2010 -

Johanes Ferreira

Senior Full-Stack Software Engineer

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01 / About

Johanes Ferreira "Joe"

Deep expertise in Java microservices and enterprise systems. Building full-stack applications with Rails and React. Creating AI workflows that shift engineering time from routine code to architecture and product thinking.

Capabilities Download CV Experience
Johanes Ferreira
Based in Paraná, Brazil
Experience 16+ years
Focus Full-Stack & AI/LLM
01 / About, continued

I build full-stack applications and AI-powered systems, from Rails APIs and React interfaces to LLM-driven extraction pipelines and development automation platforms.

01

End-to-End Ownership

I specialize in owning systems end to end, from architecture and database design to backend services, distributed processing, frontend delivery, and AI integration. My work focuses on turning complex, manual workflows into reliable, automated systems at scale.

02

AI-Driven Platforms

More recently, I've focused on AI-driven platforms, including multi-provider LLM extraction pipelines and development automation systems powered by specialized agents that handle routine tasks across the SDLC, freeing engineers to focus on architecture and product design.

Global Reach

Brazil · Portugal · France · South Korea · USA · Poland · Spain

Finance · Telecommunications · Retail · Construction · Agriculture

My background spans Java, SOA architecture, and test automation, building a strong, practical understanding of the full software development lifecycle. Today, I apply that foundation to design and deliver complete, production-ready systems.

“My best work isn't measured by lines of code, but by the time I've given back to my teammates and clients around the world. Because in the end, time is the most valuable currency we have.”
16+ Years
10 Companies
7 Countries
3 Languages
02 / Recommendations

What People Say

03 / Capabilities

What I Build

Always happy to connect and exchange experiences.

AI Process Automation

  • Turn manual, repetitive workflows into reliable AI-powered systems
  • Document extraction, data processing, intelligent matching
  • Multi-provider LLM architecture with failover for reliability
Let's Talk →

Full-Stack Application Development

  • End-to-end systems from database design to production UI
  • Ruby on Rails, React/TypeScript, Java/Spring Boot
  • Multi-tenant SaaS, event-driven architectures, API design
Let's Talk →

AI Integration

  • Integrate OpenAI, Gemini, Claude, or OpenRouter into existing products
  • Prompt engineering, validation frameworks, cost optimization
  • Multi-provider strategies for reliability and performance
Let's Talk →

DevOps & CI/CD Automation

  • GitHub Actions, Docker, Kubernetes deployment pipelines
  • Automated testing, build optimization, monitoring
  • Developer workflow tooling that reduces friction
Let's Talk →
04 / Experience

Career Timeline

05 / Projects

Selected Work

06 / Contact

Let's talk
technology.

Working on something interesting, or just want to trade notes on engineering and AI? Eager to connect.

Email dev@johanes.com.br GitHub github.com/johanes LinkedIn linkedin.com/in/johanes-dev
Paraná, Brazil Eager to connect